Print complete response body along with response code for BadResponseCodeError

Author: amitav.mohanty

lib/logstash/outputs/elasticsearch/http_client/pool.rb

@@ -12,7 +12,7 @@ def initialize(response_code, url, request_body, response_body)
       end
 
       def message
-        "Got response code '#{response_code}' contacting Elasticsearch at URL '#{@url}'"
+        "Got response code '#{response_code}' contacting Elasticsearch at URL '#{@url}'. Full response: '#{response_body}'"
       end
     end
     class HostUnreachableError < Error;